The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 31, 1985
Filed:
Dec. 12, 1983
Yoshiaki Nawata, Yokohama, JP;
Hideshi Oushiden, Kawasaki, JP;
Tokyo Shibaura Denki Kabushiki Kaisha, Kawasaki, JP;
Abstract
A copying machine includes: a rotatable photoconductive drum and an optical assembly, having optical elements, for optically scanning a paper document, and forming an optical image corresponding to an optical document image on a photoconductive drum surface. The optical assembly includes: a lens; a first mirror section for introducing the image to the lens; and a second mirror section for introducing an optical image from the lens onto the drum. The position of the first mirror section relative to that of the second mirror section varies under mass production conditions although the relative positional relationship is preset in accordance with the inherent focal length of the lens. A focus adjusting device having DIP switches which are manually operated by an operator slightly moves the lens, the first mirror section and/or the second mirror section so as to eliminate positional errors in the optical assembly in accordance with the electrical data generated by the DIP switches, thereby compensating the out-of-focus state of the optical image on the drum surface.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile